Air Street Capital is a London-based venture capital firm founded in 2019 by Nathan Benaich. It operates as one of Europe's largest solo-GP funds, backing AI-first companies where artificial intelligence is central to how the product works rather than an add-on feature.
Air Street backs companies building across the full stack of AI: foundation model infrastructure, AI-powered drug discovery, defense technology, robotics, and developer tooling. The firm focuses on technically ambitious founders building products that would not exist without AI at their core.
It deliberately avoids generic SaaS or GenAI wrappers, prioritizing mission-critical applications in areas where AI creates irreplaceable value.
Air Street Capital raised $232 million for Fund III in March 2026, bringing its total assets under management to $400 million. The fund targets early-stage AI-first companies in Europe and North America.
Check sizes range from $500,000 to $15 million, with select growth investments reaching up to $25 million. LPs include US university endowments, foundations, hospitals, and institutional investors.
Fund III follows Fund II ($121 million, 2023) and Fund I ($17 million, 2020), reflecting consistent growth. With this raise, Air Street became one of the largest solo VC funds in Europe.
United Kingdom
